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The meaning of COAL is a piece of glowing carbon or charred wood : ember. How to use coal in a sentence.
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. [1]
COAL definition: 1. a hard, black substance that is dug from the earth in pieces, and can be burned to produce heat…. Learn more.
What is coal? Coal is a sedimentary deposit composed predominantly of carbon that is readily combustible. Coal is black or brownish-black, and has a composition that (including inherent moisture) consists of more than 50 percent by weight and more than 70 percent by volume of carbonaceous material.
Coal is defined as having more than 50 percent by weight (or 70 percent by volume) carbonaceous matter produced by the compaction and hardening of altered plant remains—namely, peat deposits.
A dark-brown to black solid substance formed from the compaction and hardening of fossilized plant parts in the presence of water and in the absence of air. Carbonaceous material accounts for more than 50 percent of coal's weight and more than 70 percent of its volume.
COAL meaning: 1 : a black or brownish-black hard substance within the earth that is used as a fuel often used before another noun; 2 : a piece of coal or charcoal especially when burning.
Coal is a hard black substance that is extracted from the ground and burned as fuel. Gas-fired electricity is cheaper than coal. Today, oil and natural gas have replaced coal and wood in most areas.
Definition of coal noun from the Oxford Advanced Learner's Dictionary. coal. noun. /kəʊl/. /kəʊl/. Idioms. [uncountable] a hard black mineral that is found below the ground and burnt to produce heat. I put more coal on the fire. a lump of coal.
Coal is a mineral, a black rock that can be extracted from the earth and burned for fuel. Most of the electricity that's produced in the world is powered by the burning of coal.